Anna Tonazzini Emanuele Salerno Matteo Mochi Luigi Bedini Bleed-Through Removal from Degraded Documents Using a Color Decorrelation Method. 229-240 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3163&spage=229 2004 conf/das/2004 Document Analysis Systems db/conf/das/das2004.html#TonazziniSMB04